package com.sanqing.dao;

import com.sanqing.dao.BaseHibernateDao;
import com.sanqing.po.Department;

import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

/**
 * A data access object (DAO) providing persistence and search support for
 * Department entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see com.sanqing.po.Department
 * @author MyEclipse Persistence Tools
 */

public class DepartmentDao extends BaseHibernateDao {
	private static final Log log = LogFactory.getLog(DepartmentDao.class);
	// property constants
	public static final String NAME = "name";
	public static final String PHONE = "phone";
	public static final String INTRODUCTION = "introduction";
	public static final String PARENT_ID = "parentId";

	public void save(Department transientInstance) {
		log.debug("saving Department instance");
		try {
			Session session = getSession();
			Transaction tx = session.beginTransaction();
			session.flush();
			session.save(transientInstance);
			tx.commit();
			closeSession();
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			System.out.println(re.getMessage());
			re.printStackTrace();
			throw re;
		}
	}
	
	public void update(Department transientInstance) {
		log.debug("update Department instance");
		try {
			Department dept = findById(transientInstance.getId());
			if(transientInstance.getName()!=null){
				dept.setName(transientInstance.getName());
			}
			if(transientInstance.getPhone()!=0){
				dept.setPhone(transientInstance.getPhone());
			}
			if(transientInstance.getParent()!=null){
				dept.setParent(transientInstance.getParent());
			}
			if(transientInstance.getIntroduction()!=null){
				dept.setIntroduction(transientInstance.getIntroduction());
			}
			Session session = getSession();
			Transaction tx = session.beginTransaction();
			session.flush();
			session.update(dept);
			tx.commit();
			closeSession();
			log.debug("update successful");
		} catch (RuntimeException re) {
			log.error("update failed", re);
			System.out.println(re.getMessage());
			re.printStackTrace();
			throw re;
		}
	}
	
	public void delete(Department persistentInstance) {
		log.debug("deleting Department instance");
		try {
			Session session = getSession();
			Transaction tx = session.beginTransaction();
			session.flush();
			session.delete(persistentInstance);
			tx.commit();
			closeSession();
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Department findById(java.lang.Integer id) {
		log.debug("getting Department instance with id: " + id);
		try {
			Department instance = (Department) getSession().get(
					"com.sanqing.po.Department", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Department instance) {
		log.debug("finding Department instance by example");
		try {
			List results = getSession().createCriteria(
					"com.sanqing.po.Department").add(Example.create(instance))
					.list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Department instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Department as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByName(Object name) {
		return findByProperty(NAME, name);
	}

	public List findByPhone(Object phone) {
		return findByProperty(PHONE, phone);
	}

	public List findByIntroduction(Object introduction) {
		return findByProperty(INTRODUCTION, introduction);
	}

	public List findByparentId(Object parentId) {
		return findByProperty(PARENT_ID, parentId);
	}

	public List findAll() {
		log.debug("finding all Department instances");
		try {
			String queryString = "from Department";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
	public List findRoots() {
		String queryString = "from Department as model where model.parent = null";
		Query queryObject = getSession().createQuery(queryString);
		return queryObject.list();
	}
	
	public Set getAllChildren(Department dept,Set allDepts){
		allDepts.addAll(dept.getChildren());
		if(dept.getChildren().size()>0){
			Iterator it = dept.getChildren().iterator();
			while(it.hasNext()){
				Department child = (Department)it.next();
				getAllChildren(child,allDepts);
			}
		}
		return allDepts;
	}

	public Department merge(Department detachedInstance) {
		log.debug("merging Department instance");
		try {
			Department result = (Department) getSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Department instance) {
		log.debug("attaching dirty Department instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Department instance) {
		log.debug("attaching clean Department instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}